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authorChristian Krinitsin <mail@krinitsin.com>2025-07-08 13:28:15 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-07-08 13:28:28 +0200
commit5aa276efcbd67f4300ca1a7f809c6e00aadb03da (patch)
tree9b8f0e074014cda8d42f5a97a95bc25082d8b764 /results/classifier/zero-shot-user-mode/syscall/982
parent1a3c4faf4e0a25ed0b86e8739d5319a634cb9112 (diff)
downloademulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.tar.gz
emulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.zip
restructure results
Diffstat (limited to 'results/classifier/zero-shot-user-mode/syscall/982')
-rw-r--r--results/classifier/zero-shot-user-mode/syscall/98243
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diff --git a/results/classifier/zero-shot-user-mode/syscall/982 b/results/classifier/zero-shot-user-mode/syscall/982
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+syscall: 0.514
+instruction: 0.353
+runtime: 0.133
+
+
+
+linux-user: --strace incorrectly decodes writev arguments for 64-bit binaries on 32-bit machine
+Description of problem:
+With `--strace`, the arguments to `writev` appear to be decoded incorrectly.
+The syscall still succeeds and has the expected effects.
+Steps to reproduce:
+```
+$ cat main.c
+#include <sys/uio.h>
+
+int main(void) {
+  struct iovec iov;
+  iov.iov_base = "hello, world!\n";
+  iov.iov_len = 14;
+  return writev(1, &iov, 1);
+}
+
+$ aarch64-unknown-linux-gnu-gcc -static -o aarch64-main main.c
+
+$ x86_64-pc-linux-gnu-gcc -static -o x86_64-main main.c
+
+$ i686-pc-linux-gnu-gcc -static -o i686-main main.c
+
+$ ./i686-main
+hello, world!
+
+$ strace ./i686-main |& grep writev
+writev(1, [{iov_base="hello, world!\n", iov_len=14}], 1hello, world!
+
+$ qemu-i386 --strace ./i686-main |& grep writev
+21953 writev(1,0x407ffe54,0x1) = 14
+
+$ qemu-x86_64 --strace ./x86_64-main |& grep writev
+22218 writev(1,(nil),0x407ffcc0) = 14
+
+$ qemu-aarch64 --strace ./aarch64-main |& grep writev
+22523 writev(1,(nil),0x407ffcc8) = 14
+```